wats the difference between oven and microwave oven ?

Answer 1

An oven generates heat via a burner (gas or electric) that is radiated throughout the oven to a certain temperature. This heat then cooks the food from the outside in, as the heat radiates into the food.

A microwave oven uses a device called a magnetron to generate RF (radio) energy in the microwave region of the frequency spectrum. The wavelength of the RF energy, or microwaves, is such that it causes the hydrogen atoms in water molecules to vibrate. This vibration causes the water to heat up on a molecular level.

Microwaves penetrate other substances and only excite the hydrogen atoms. This means that the inside of something being cooked in a microwave oven heats up at almost the same rate as the outside. So, it is said that a microwave oven actually cooks things from the inside out.

It's also why you can put glass or plastic bowls into a microwave oven and they won't get hot (except for where heated food touches it). This is because there is no hydrogen in the glass or plastic. So, there is nothing to absorb the microwave energy.

If you put metal (wire basket or aluminum foil) into a microwave, particularly if there is nothing else in it, the RF energy gets collected by the metal and it gets released as arcing and sparking. This in turn heats up the metal . But, if you have food in the microwave on top of a specially designed sheet of metal (like they do for some microwave-ready frozen foods), this metal heats up and can be used to brown the food (like the little sleeve they include with Hot Pockets).

If you have nothing in the microwave and run it, the RF energy bounces around inside and eventually radiates back into the magnetron. This could burn out the magnetron and possibly start a fire in the oven.

The holes in the metal screen on the front glass of a microwave door is small enough that the microwave energy just bounces off of it and stays in the oven until it's absorbed by the hydrogen atoms in whatever you're cooking.

The microwave oven was actually discovered by accident by some men working at a shipyard. They noticed that, if they set their lunch bags in front of a radar transmitting antenna, it would heat up their food.

Answer 2

an oven cooks the food a lot better. it may be a little slower but the food tastes a lot better and its cooked more evenly. a microwave oven is just a microwave. so you can cook food really fast but depending on what it may not work as well as an oven and it may not taste as good. oh and ovens you can set to specific temps, microwaves you can't really do that.

Answer 3

thats correct. But you spelled it wrong.

Its watts.

Just kidding.

Microwaves cook without external heat. Advantage is quicker cooking. Disadvantage is no browning